var fruitObject=function () {
	
	this.alive=[];
	this.x=[];
	this.y=[];
	this.l=[];
	this.spd=[];
	this.fruitType=[];
	this.aneNumber=[];
	this.orange=new Image();
	this.blue=new Image();
}

fruitObject.prototype.num=30;

fruitObject.prototype.init=function () {
	
	for (i=0;i<this.num;i++) {
		this.alive[i]=false;
		this.x[i]=0;
		this.y[i]=0;
		this.aneNumber[i]=0;
		this.spd[i]=Math.random()*0.017+0.003;//每个果实的随机速度
		this.fruitType[i]="";
		this.born(i);
	}
	this.orange.src="img/fruit.png"
	this.blue.src="img/blue.png";
}

fruitObject.prototype.draw=function () {
	for (i=0;i<this.num;i++) {
		if(this.alive[i]){
			if(this.fruitType[i]=="blue"){
				var pic=this.blue;
			}else{
				var pic=this.orange;
			}
			
		if(this.l[i]<=12){
			var number=this.aneNumber[i];
			this.x[i]=ane.headx[number];
			this.y[i]=ane.heady[number];
			this.l[i]+=this.spd[i]*deltaTime;

		}else{
			this.y[i]-=this.spd[i]*7*deltaTime;

		}
		context2.drawImage(pic,this.x[i]-this.l[i]*0.5,this.y[i]-this.l[i]*0.5,this.l[i],this.l[i]);
	    if(this.y[i]<10){
	    	this.alive[i]=false;
	    }
	   }
	}
	
}
fruitObject.prototype.born=function (i) {
	
	this.aneNumber[i]=Math.floor(Math.random()*ane.num);
	this.l[i]=0;
	this.alive[i]=true;
	var ran=Math.random();
	if(ran<0.2){
		this.fruitType[i]="blue";
	}else{
		this.fruitType[i]="orange";
	}
	
	
}
fruitObject.prototype.dead=function (i) {
     
     this.alive[i]=false;
}

function fruitMonitor () {
	var num=0;
	for (i=0;i<fruit.num;i++) {
		if(fruit.alive[i]){
			num++;
		}
		if(num<15){
			sendFruit();
			return;
		}
	}
	
}

function sendFruit () {
	for (i=0;i<fruit.num;i++) {
		if(!fruit.alive[i]){
			fruit.born(i);//如果果实状态是false，就让果实出生
			return;
		}
	}
	
}
//fruitObject.prototype.update=function (){
//	var num=0;
//	for (i=0;i<this.num;i++) {
//		if(this.alive[i]){
//		  num++;	
//		}
//	}
//}

